US10230445B2 - Data transmission method, data reception method, data transmission device and data reception device - Google Patents

Data transmission method, data reception method, data transmission device and data reception device Download PDF

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US10230445B2
US10230445B2 US15/564,196 US201615564196A US10230445B2 US 10230445 B2 US10230445 B2 US 10230445B2 US 201615564196 A US201615564196 A US 201615564196A US 10230445 B2 US10230445 B2 US 10230445B2
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encoding matrix
ues
transmission
data
transmission resources
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US20180131433A1 (en
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Shaoli Kang
Bin Ren
Yang Song
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Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041—Arrangements at the transmitter end
    • H04L1/0042—Encoding specially adapted to other signal generation operation, e.g. in order to reduce transmit distortions, jitter, or to improve signal shape
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H04B1/7107—Subtractive interference cancellation
    • H04B1/71072—Successive interference cancellation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0658—Feedback reduction
    • H04B7/0663—Feedback reduction using vector or matrix manipulations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0016—Time-frequency-code
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03592—Adaptation methods
    • H04L2025/03598—Algorithms
    • H04L2025/03605—Block algorithms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0204—Channel estimation of multiple channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT

Definitions

  • the present disclosure relates to the field of wireless communication technology, in particular to a data transmission method, a data reception method, a data transmission device and a data reception device.
  • OFDMA Orthogonal Frequency Division Multiple Access
  • LTE Long Term Evolution
  • IoT Internet business and Internet of Things
  • a non-orthogonal multiple access technology has shown more advantages in terms of system capacity, time delay and the number of terminals supported thereby, so it may probably be adopted by a fifth Generation (5G) mobile communication system.
  • 5G fifth Generation
  • NOMA Non-Orthogonal Multiple Access
  • SCMA Sparse Code Multiple Access
  • PDMA Pattern Division Multiple Access
  • SIC Serial Interference Cancellation
  • SCMA Serial Interference Cancellation
  • MCA iterative Message Passing Algorithm
  • the users are differentiated from each other in accordance with non-orthogonal characteristic patterns of a signal from a terminal based on a plurality of signal domains such as the power domain, a code domain and a spatial domain using a pattern division technique, and at the receiving end, multi-user detection may be performed using a Belief Propagation (BP) algorithm receiver and the SCI receiver on the basis of a characteristic structure of a terminal pattern, so as to provide the system capacity approaching to a capacity boundary of a multiple access channel.
  • BP Belief Propagation
  • an encoding matrix may be used as a basic mapping pattern so as to differentiate the users from each other.
  • each row of the encoding matrix corresponds to a frequency-domain resource block which participates in data mapping for multi-user multiplexing, and each row represents a multi-user data pattern mapping mode.
  • a theoretical maximum value of M may be 2N ⁇ 1, depending on a principle where the M users can be differentiated from each other in terms of their encoding modes.
  • a theoretical multi-user superposition encoding matrix i.e., HPDMA
  • HPDMA a theoretical multi-user superposition encoding matrix formed through the multi-user superposition encoding
  • an appropriate construction scheme of the PDMA encoding matrix may be determined, so as to make a compromise between the system capacity and the calculation complexity.
  • a pattern mapping mode between the multi-user data and the encoding matrix is inflexible, and in the finally-determined encoding matrix, usually the data for one user is merely mapped to a certain column of the encoding matrix.
  • UE User Equipment
  • An object of the present disclosure is to provide a data transmission method, a data reception method, a data transmission device and a data reception device, so as to solve the problem in the related art where, in the case that a small amount of users are scheduled by the system, it is hardly to increase the transmission load of the UE due to the mapping of the UEs to the encoding matrix in a single manner, and thereby the throughput of the system is limited.
  • the present disclosure provides in some embodiments a data transmission method, including steps of: acquiring, by a network side, a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2N ⁇ 1; and transmitting, by the network side, data to the K UEs in accordance with the current data transmission rule.
  • various pattern-mapping encoding matrices may be selected flexibly.
  • one UE is mapped to one or more data layers of the selected encoding matrix, so as to achieve the mapping relationship between multi-user data and the encoding matrix in a flexible manner.
  • one UE may be mapped to a plurality of data layers, so it is able to increase a transmission load of the UE, thereby to increase a throughput of the entire system. Further, it is able to reduce a modulation encoding level while ensuring the spectral efficiency, thereby to further reduce algorithm complexity of a receiver.
  • the data transmission method prior to the step of acquiring the current data transmission rule, further includes: determining the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs, K ⁇ 2 N ⁇ 1; and selecting an encoding matrix used when the N transmission resources are multiplexed by 2 N ⁇ 1 predetermined data layers.
  • the step of determining the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs, K ⁇ 2 N ⁇ 1, and selecting the encoding matrix used when the N transmission resources are multiplexed by the 2 N ⁇ 1 predetermined data layers includes: selecting, in accordance with a plurality of values of n corresponding to a plurality of predetermined to-be-selected encoding matrices, a set of values of n which each meets a condition K ⁇ 2 n ⁇ 1; selecting a set of the to-be-selected encoding matrices available for the K UEs from the plurality of to-be-selected encoding matrices in accordance with the set of values of n; and selecting the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and selecting a to-be-selected encoding matrix corresponding to a
  • the step of selecting the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and selecting the to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the N transmission resources are multiplexed by the 2 N ⁇ 1 data layers includes: selecting a random value from the set of values of n as the number N of the transmission resources which are capable of being currently multiplexed by the K UEs, the random value being not greater than the number of system-available frequency-domain resources and the corresponding 2 n ⁇ 1 predetermined data layers being capable of meeting a load requirement of the K UEs; and selecting a to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the N transmission resources are multiplexed by the 2
  • each UE is mapped to at least one column of the encoding matrix that meets a corresponding transmission requirement parameter in accordance with the transmission requirement parameter of each UE, e of the encoding matrix corresponds to one data layer.
  • the transmission requirement parameter at least includes a load of each UE, and any one of the following parameters or any combination of the following combinations: signal-to-noise ratio (SNR), block error rate (BER) and power resource.
  • SNR signal-to-noise ratio
  • BER block error rate
  • each UE is mapped to one column of the encoding matrix that meets the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have an identical diversity order and meet the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have different diversity orders and meet the transmission requirement parameter.
  • the diversity order is defined as the number of non-zero elements in each column of the encoding matrix and it is used to represent frequency-domain diversity acquired for data transmission.
  • the present disclosure provides in some embodiments a data reception method, including steps of: acquiring, by a network side, a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1 ; and receiving, by the network side, data transmitted from the K UEs in accordance with the current data transmission rule.
  • various pattern-mapping encoding matrices may be selected flexibly.
  • one UE is mapped to one or more data layers of the selected encoding matrix, so as to achieve the mapping relationship between multi-user data and the encoding matrix in a flexible manner.
  • one UE may be mapped to a plurality of data layers, so it is able to increase a transmission load of the UE, thereby to increase a throughput of the entire system. Further, it is able to reduce a modulation encoding level while ensuring the spectral efficiency, thereby to further reduce algorithm complexity of a receiver.
  • the data reception method prior to the step of acquiring the current data transmission rule, further includes: determining the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs, K ⁇ 2 N ⁇ 1; and selecting an encoding matrix used when the N transmission resources are multiplexed by 2 N ⁇ 1 predetermined data layers.
  • the step of determining the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs, K ⁇ 2 N ⁇ 1, and selecting the encoding matrix used when the N transmission resources are multiplexed by the 2 N ⁇ 1 predetermined data layers includes: selecting, in accordance with a plurality of values of n corresponding to a plurality of predetermined to-be-selected encoding matrices, a set of values of n which each meets a condition K ⁇ 2 n ⁇ 1; selecting a set of the to-be-selected encoding matrices available for the K UEs from the plurality of to-be-selected encoding matrices in accordance with the set of values of n; and selecting the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and selecting a to-be-selected encoding matrix corresponding to a
  • the step of selecting the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and selecting the to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the N transmission resources are multiplexed by the 2 N ⁇ 1 data layers includes: selecting a random value from the set of values of n as the number N of the transmission resources which are capable of being currently multiplexed by the K UEs, the random value being not greater than the number of system-available frequency-domain resources and the corresponding 2 n ⁇ 1 predetermined data layers being capable of meeting a load requirement of the K UEs; and selecting a to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the N transmission resources are multiplexed by the 2
  • each UE is mapped to at least one column of the encoding matrix that meets a corresponding transmission requirement parameter in accordance with the transmission requirement parameter of each UE, and each column of the encoding matrix corresponds to one data layer.
  • the transmission requirement parameter at least includes a load of each UE, any one of the following parameters or any combination of the following combinations: signal-to-noise ratio (SNR), block error rate (BER) and power resource.
  • SNR signal-to-noise ratio
  • BER block error rate
  • each UE is mapped to one column of the encoding matrix that meets the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have an identical diversity order and meet the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have different diversity orders and meet the transmission requirement parameter.
  • the diversity order is defined as the number of non-zero elements in each column of the encoding matrix and it is used to represent frequency-domain diversity acquired for data transmission.
  • the present disclosure provides in some embodiments a data transmission method, including steps of: acquiring, by a UE, a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1; and transmitting, by the UE, data to a network side in accordance with the current data transmission rule through the at least one data layer occupied by the UE in the encoding matrix.
  • various pattern-mapping encoding matrices may be selected flexibly.
  • one UE is mapped to one or more data layers of the selected encoding matrix, so as to achieve the mapping relationship between multi-user data and the encoding matrix in a flexible manner.
  • one UE may be mapped to a plurality of data layers, so it is able to increase a transmission load of the UE, thereby to increase a throughput of the entire system. Further, it is able to reduce a modulation encoding level while ensuring the spectral efficiency, thereby to further reduce algorithm complexity of a receiver.
  • the data transmission method prior to the step of acquiring the current data transmission rule, further includes: determining from the network side, the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs, K ⁇ 2 N ⁇ 1; and selecting an encoding matrix used when the N transmission resources are multiplexed by 2 N ⁇ 1 predetermined data layers.
  • the step of determining, from the network side, the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs, K ⁇ 2 N ⁇ 1, and selecting the encoding matrix used when the N transmission resources are multiplexed by the 2 N ⁇ 1 predetermined data layers includes: selecting, in accordance with a plurality of values of n corresponding to a plurality of predetermined to-be-selected encoding matrices, a set of values of n which each meets a condition K ⁇ 2 n ⁇ 1; selecting a set of the to-be-selected encoding matrices available for the K UEs from the plurality of to-be-selected encoding matrices in accordance with the set of values of n; and selecting the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and selecting a to-be-selected encoding
  • the step of selecting the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and selecting the to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the N transmission resources are multiplexed by the 2 N ⁇ 1 data layers includes: selecting a random value from the set of values of n as the number N of the transmission resources which are capable of being currently multiplexed by the K UEs, the random value being not greater than the number of system-available frequency-domain resources and the corresponding 2 n ⁇ 1 predetermined data layers being capable of meeting a load requirement of the K UEs; and selecting a to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the N transmission resources are multiplexed by the 2
  • each UE is mapped to at least one column of the encoding matrix that meets a corresponding transmission requirement parameter in accordance with the transmission requirement parameter of each UE, and each column of the encoding matrix corresponds to one data layer.
  • the transmission requirement parameter at least includes a load of each UE, and any one of the following parameters or any combination of the following combinations: signal-to-noise ratio (SNR), block error rate (BER) and power resource.
  • SNR signal-to-noise ratio
  • BER block error rate
  • each UE is mapped to one column of the encoding matrix that meets the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have an identical diversity order and meet the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have different diversity orders and meet the transmission requirement parameter.
  • the diversity order is defined as the number of non-zero elements in each column of the encoding matrix and it is used to represent frequency-domain diversity acquired for data transmission.
  • the present disclosure provides in some embodiments a data reception method, including steps of: acquiring, by a UE, a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1; and receiving, by the UE, feedback data from a network side, the feedback data being fed back by the network side after receiving data transmitted from the UE in accordance with the current data transmission rule.
  • various pattern-mapping encoding matrices may be selected flexibly.
  • one UE is mapped to one or more data layers of the selected encoding matrix, so as to achieve the mapping relationship between multi-user data and the encoding matrix in a flexible manner.
  • one UE may be mapped to a plurality of data layers, so it is able to increase a transmission load of the UE, thereby to increase a throughput of the entire system. Further, it is able to reduce a modulation encoding level while ensuring the spectral efficiency, thereby to further reduce algorithm complexity of a receiver.
  • the data reception method prior to the step of acquiring the current data transmission rule, further includes: determining from the network side, the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs, K ⁇ 2 N ⁇ 1; and selecting an encoding matrix used when the N transmission resources are multiplexed by 2 N ⁇ 1 predetermined data layers.
  • the step of determining, from the network side, the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs, K ⁇ 2 N ⁇ 1, and selecting the encoding matrix used when the N transmission resources are multiplexed by the 2 N ⁇ 1 predetermined data layers includes: selecting, in accordance with a plurality of values of n corresponding to a plurality of predetermined to-be-selected encoding matrices, a set of values of n which each meets a condition K ⁇ 2 n ⁇ 1; selecting a set of the to-be-selected encoding matrices available for the K UEs from the plurality of to-be-selected encoding matrices in accordance with the set of values of n; and selecting the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and selecting a to-be-selected encoding
  • the step of selecting the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and selecting the to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the N transmission resources are multiplexed by the 2 N ⁇ 1 data layers includes: selecting a random value from the set of values of n as the number N of the transmission resources which are capable of being currently multiplexed by the K UEs, the random value being not greater than the number of system-available frequency-domain resources and the corresponding 2 n ⁇ 1 predetermined data layers being capable of meeting a load requirement of the K UEs; and selecting a to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the N transmission resources are multiplexed by the 2
  • each UE is mapped to at least one column of the encoding matrix that meets a corresponding transmission requirement parameter in accordance with the transmission requirement parameter of each UE, and each column of the encoding matrix corresponds to one data layer.
  • the transmission requirement parameter at least includes a load of each UE, and any one of the following parameters or any combination of the following combinations: signal-to-noise ratio (SNR), block error rate (BER) and power resource.
  • SNR signal-to-noise ratio
  • BER block error rate
  • each UE is mapped to one column of the encoding matrix that meets the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have an identical diversity order and meet the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have different diversity orders and meet the transmission requirement parameter.
  • the diversity order is defined as the number of non-zero elements in each column of the encoding matrix and it is used to represent frequency-domain diversity acquired for data transmission.
  • a network side device including: a processing unit configured to acquire a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1; and a transmission unit configured to transmit data to the K UEs in accordance with the current data transmission rule.
  • various pattern-mapping encoding matrices may be selected flexibly.
  • one UE is mapped to one or more data layers of the selected encoding matrix, so as to achieve the mapping relationship between multi-user data and the encoding matrix in a flexible manner.
  • one UE may be mapped to a plurality of data layers, so it is able to increase a transmission load of the UE, thereby to increase a throughput of the entire system. Further, it is able to reduce a modulation encoding level while ensuring the spectral efficiency, thereby to further reduce algorithm complexity of a receiver.
  • the network side device prior to acquiring the current data transmission rule, further includes a selection unit configured to: determine the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs, K ⁇ 2 N ⁇ 1; and select an encoding matrix used when the N transmission resources are multiplexed by 2 N ⁇ 1 predetermined data layers.
  • the selection unit is further configured to: select, in accordance with a plurality of values of n corresponding to a plurality of predetermined to-be-selected encoding matrices, a set of values of n which each meets a condition K ⁇ 2 n ⁇ 1; select a set of the to-be-selected encoding matrices available for the K UEs from the plurality of to-be-selected encoding matrices in accordance with the set of values of n; and select the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and select a to-be-selected
  • the selection unit is further configured to: select a random value from the set of values of n as the number N of the transmission resources which are capable of being currently multiplexed by the K UEs, the random value being not greater than the number of system-available frequency-domain resources and the corresponding 2 n ⁇ 1 predetermined data layers being capable of meeting a load requirement of the K UEs; and select a to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the N transmission resources
  • each UE is mapped to at least one column of the encoding matrix that meets a corresponding transmission requirement parameter in accordance with the transmission requirement parameter of each UE, and each column of the encoding matrix corresponds to one data layer.
  • the transmission requirement parameter at least includes a load of each UE, and any one of the following parameters or any combination of the following combinations: signal-to-noise ratio (SNR), block error rate (BER) and power resource.
  • SNR signal-to-noise ratio
  • BER block error rate
  • each UE is mapped to one column of the encoding matrix that meets the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have an identical diversity order and meet the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have different diversity orders and meet the transmission requirement parameter.
  • the diversity order is defined as the number of non-zero elements in each column of the encoding matrix and it is used to represent frequency-domain diversity acquired for data transmission.
  • a network side device including: a processing unit configured to acquire a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1; and a reception unit configured to receive data transmitted from the K UEs in accordance with the current data transmission rule.
  • various pattern-mapping encoding matrices may be selected flexibly.
  • one UE is mapped to one or more data layers of the selected encoding matrix, so as to achieve the mapping relationship between multi-user data and the encoding matrix in a flexible manner.
  • one UE may be mapped to a plurality of data layers, so it is able to increase a transmission load of the UE, thereby to increase a throughput of the entire system. Further, it is able to reduce a modulation encoding level while ensuring the spectral efficiency, thereby to further reduce algorithm complexity of a receiver.
  • the network side device prior to acquiring the current data transmission rule, further includes a selection unit configured to: determine the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs, K ⁇ 2 N ⁇ 1; and select an encoding matrix used when the N transmission resources are multiplexed by 2 N ⁇ 1 predetermined data layers.
  • the selection unit is further configured to: select, in accordance with a plurality of values of n corresponding to a plurality of predetermined to-be-selected encoding matrices, a set of values of n which each meets a condition K ⁇ 2 n ⁇ 1; select a set of the to-be-selected encoding matrices available for the K UEs from the plurality of to-be-selected encoding matrices in accordance with the set of values of n; and select the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and select a to-be-selected
  • the selection unit is further configured to: select a random value from the set of values of n as the number N of the transmission resources which are capable of being currently multiplexed by the K UEs, the random value being not greater than the number of system-available frequency-domain resources and the corresponding 2 n ⁇ 1 predetermined data layers being capable of meeting a load requirement of the K UEs; and select a to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the N transmission resources
  • each UE is mapped to at least one column of the encoding matrix that meets a corresponding transmission requirement parameter in accordance with the transmission requirement parameter of each UE, and each column of the encoding matrix corresponds to one data layer.
  • the transmission requirement parameter at least includes a load of each UE, and any one of the following parameters or any combination of the following combinations: signal-to-noise ratio (SNR), block error rate (BER) and power resource.
  • SNR signal-to-noise ratio
  • BER block error rate
  • each UE is mapped to one column of the encoding matrix that meets the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have an identical diversity order and meet the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have different diversity orders and meet the transmission requirement parameter.
  • the diversity order is defined as the number of non-zero elements in each column of the encoding matrix and it is used to represent frequency-domain diversity acquired for data transmission.
  • a UE including: a processing unit configured to acquire a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1; and a transmission unit configured to transmit data to a network side in accordance with the current data transmission rule through the at least one data layer occupied by the UE in the encoding matrix.
  • various pattern-mapping encoding matrices may be selected flexibly.
  • one UE is mapped to one or more data layers of the selected encoding matrix, so as to achieve the mapping relationship between multi-user data and the encoding matrix in a flexible manner.
  • one UE may be mapped to a plurality of data layers, so it is able to increase a transmission load of the UE, thereby to increase a throughput of the entire system. Further, it is able to reduce a modulation encoding level while ensuring the spectral efficiency, thereby to further reduce algorithm complexity of a receiver.
  • the UE prior to acquiring the current data transmission rule, further includes a selection unit configured to: determine from the network side, the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs, K ⁇ 2 N ⁇ 1; and select an encoding matrix used when the N transmission resources are multiplexed by 2 N ⁇ 1 predetermined data layers.
  • the selection unit is further configured to: select, in accordance with a plurality of values of n corresponding to a plurality of predetermined to-be-selected encoding matrices, a set of values of n which each meets a condition K ⁇ 2 n ⁇ 1; select a set of the to-be-selected encoding matrices available for the K UEs from the plurality of to-be-selected encoding matrices in accordance with the set of values of n; and select the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and select a to
  • the selection unit is further configured to: select a random value from the set of values of n as the number N of the transmission resources which are capable of being currently multiplexed by the K UEs, the random value being not greater than the number of system-available frequency-domain resources and the corresponding 2 n ⁇ 1 predetermined data layers being capable of meeting a load requirement of the K UEs; and select a to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the N transmission resources
  • each UE is mapped to at least one column of the encoding matrix that meets a corresponding transmission requirement parameter in accordance with the transmission requirement parameter of each UE, and each column of the encoding matrix corresponds to one data layer.
  • the transmission requirement parameter at least includes a load of each UE, and any one of the following parameters or any combination of the following combinations: signal-to-noise ratio (SNR), block error rate (BER) and power resource.
  • SNR signal-to-noise ratio
  • BER block error rate
  • each UE is mapped to one column of the encoding matrix that meets the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have an identical diversity order and meet the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have different diversity orders and meet the transmission requirement parameter.
  • the diversity order is defined as the number of non-zero elements in each column of the encoding matrix and it is used to represent frequency-domain diversity acquired for data transmission.
  • a UE including: a processing unit configured to acquire a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1 ; and a reception unit configured to receive feedback data from a network side, the feedback data being fed back by the network side after receiving data transmitted from the UE in accordance with the current data transmission rule.
  • various pattern-mapping encoding matrices may be selected flexibly.
  • one UE is mapped to one or more data layers of the selected encoding matrix, so as to achieve the mapping relationship between multi-user data and the encoding matrix in a flexible manner.
  • one UE may be mapped to a plurality of data layers, so it is able to increase a transmission load of the UE, thereby to increase a throughput of the entire system. Further, it is able to reduce a modulation encoding level while ensuring the spectral efficiency, thereby to further reduce algorithm complexity of a receiver.
  • the UE prior to acquiring the current data transmission rule, further includes a selection unit configured to: determine from the network side, the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs, K ⁇ 2 N ⁇ 1; and select an encoding matrix used when the N transmission resources are multiplexed by 2 N ⁇ 1 predetermined data layers.
  • the selection unit is further configured to: select, in accordance with a plurality of values of n corresponding to a plurality of predetermined to-be-selected encoding matrices, a set of values of n which each meets a condition K ⁇ 2 n ⁇ 1; select a set of the to-be-selected encoding matrices available for the K UEs from the plurality of to-be-selected encoding matrices in accordance with the set of values of n; and select the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and select a to
  • the selection unit is further configured to: select a random value from the set of values of n as the number N of the transmission resources which are capable of being currently multiplexed by the K UEs, the random value being not greater than the number of system-available frequency-domain resources and the corresponding 2 n ⁇ 1 predetermined data layers being capable of meeting a load requirement of the K UEs; and select a to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the N transmission resources
  • each UE is mapped to at least one column of the encoding matrix that meets a corresponding transmission requirement parameter in accordance with the transmission requirement parameter of each UE, and each column of the encoding matrix corresponds to one data layer.
  • the transmission requirement parameter at least includes a load of each UE, and any one of the following parameters or any combination of the following combinations: signal-to-noise ratio (SNR), block error rate (BER) and power resource.
  • SNR signal-to-noise ratio
  • BER block error rate
  • each UE is mapped to one column of the encoding matrix that meets the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have an identical diversity order and meet the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have different diversity orders and meet the transmission requirement parameter.
  • the diversity order is defined as the number of non-zero elements in each column of the encoding matrix and it is used to represent frequency-domain diversity acquired for data transmission.
  • FIGS. 1 a and 1 c are flow charts of a data transmission method according to one embodiment of the present disclosure
  • FIGS. 1 b and 1 d are flow charts of a data reception method according to one embodiment of the present disclosure
  • FIGS. 2 a , 2 b and 2 c are schematic views showing mapping modes where two UEs correspond to two transmission resources according to one embodiment of the present disclosure
  • FIG. 3 is a schematic view showing a mapping mode where two UEs correspond to three transmission resources according to one embodiment of the present disclosure
  • FIG. 4 is a schematic view showing a mapping mode where two UEs correspond to four transmission resources according to one embodiment of the present disclosure
  • FIGS. 5 and 6 are schematic views showing different pattern mapping modes in the case that the transmission resources are multiplexed by three UEs according to one embodiment of the present disclosure
  • FIGS. 7 a , 7 b , 8 a and 8 b are schematic views showing a network side device according to one embodiment of the present disclosure.
  • FIGS. 7 c , 7 d , 8 c and 8 d are schematic views showing a UE according to one embodiment of the present disclosure.
  • a PDMA technology is a technology implemented on the basis of overall optimization of a multi-user communication system and capable of performing joint processing at both a transmitting end and a receiving end.
  • users are differentiated from each other in accordance with non-orthogonal characteristic patterns based on a plurality of signal domains, and at the receiving end, multi-user detection is performed using a BP algorithm receiver and an SCI receiver on the basis of a characteristic structure of a user pattern, so as to enable the existing time-frequency radio resources to be multiplexed by the users.
  • the present disclosure provides in some embodiments a data transmission method, a data reception method, a data transmission device and a data reception device. For the given number of UEs, it is able to select the encoding matrices with different dimensions in a flexible manner, and after the encoding matrix has been determined, a mapping relationship between the UEs and a plurality of data layers on a plurality of transmission resources (frequency-domain transmission resources are involved in the embodiments of the present disclosure) corresponding to the encoding matrix is created.
  • One UE may be mapped to one or more data layers that meet a transmission requirement of the UE, i.e., one UE may occupy one or more columns of the encoding matrix.
  • the data layers of the encoding matrix may be used by an identical UE, so it is able to increase a transmission load of the UE, thereby to increase a total transmission load of a system and increase a throughput of the entire system. Further, it is able to reduce a modulation encoding level while ensuring the spectral efficiency, thereby to further reduce algorithm complexity of a receiver.
  • a network side device involved in the embodiments of the present disclosure may be a base station.
  • the UE involved in the embodiments of the present disclosure may be a wireless terminal, e.g., a mobile phone.
  • the data transmission method and the data reception method in the embodiments of the present disclosure may be applied to a downlink or an uplink.
  • the methods may be adopted by the network side for the transmission of downlink data or uplink data individually.
  • the methods may be adopted by the UE for the transmission of downlink data or uplink data individually.
  • the methods may be adopted by the network side and the UE within an identical time period for the interaction of the uplink and downlink data simultaneously.
  • the present disclosure provides in some embodiments a data transmission method which includes the following steps.
  • the network side device may determine the number K of currently-scheduled UEs and the number N of transmission resources multiplexed by the UEs, and determine an encoding matrix (a first encoding matrix) in the case that the N transmission resources are multiplexed by 2 N ⁇ 1 predetermined data layers, where K ⁇ 2 N ⁇ 1.
  • the network side device may determine the number (K) of the currently-scheduled UEs that have participated in the multiplexing of the transmission resources, and select an available to-be-selected encoding matrix for the K UEs.
  • K the number of the currently-scheduled UEs that have participated in the multiplexing of the transmission resources.
  • Step S 1 selecting, by the network side in accordance with a plurality of values of n corresponding to a plurality of predetermined to-be-selected encoding matrices, a set of values of n which each meets a condition K ⁇ 2 n ⁇ 1, where n represents the number of the transmission resources corresponding to a to-be-selected encoding matrix, and the to-be-selected encoding matrix is an encoding matrix used when the number of the UEs that multiplex the plurality of transmission resources has a theoretical maximum value (i.e., 2 n ⁇ 1) on the basis of a principle where multi-UE encoding modes are capable of being differentiated from each other, i.e., an encoding matrix used when the N transmission resources are multiplexed by 2 n ⁇ 1 data layers.
  • n represents the number of the transmission resources corresponding to a to-be-selected encoding matrix
  • the to-be-selected encoding matrix is an encoding matrix used when the number
  • H PDMA (N,M) represents an N*M encoding matrix
  • N represents the number of rows of H PDMA (N,M)
  • each row of H PDMA (N,M) corresponds to one transmission resource (i.e., N represents the number of the transmission resources for H PDMA (N,M) )
  • M represents the number of columns of H PDMA (N,M)
  • each column represents one data layer (i.e., M represents the number of data layers for H PDMA (N,M) ).
  • three to-be-selected encoding matrices H PDMA (2,3) , H PDMA (3,7) and H PDMA (4,15) may be preconfigured by the transmitting end, and the values of n corresponding to these encoding matrices are 2, 3 and 4.
  • the set of values of n that meet the condition K ⁇ 2 n ⁇ 1 may be ⁇ 2, 3, 4 ⁇
  • the set of values of n that meet the condition K ⁇ 2 n ⁇ 1 may be ⁇ 2, 3, 4 ⁇
  • the set of values of n that meet the condition K ⁇ 2 n ⁇ 1 may be ⁇ 3, 4 ⁇ .
  • any other to-be-selected encoding matrices may be set.
  • Step S 2 selecting a set of the to-be-selected encoding matrices available for the K UEs from the plurality of to-be-selected encoding matrices in accordance with the set of values of n.
  • the number N of the transmission resources that are capable of being currently multiplexed by the K UEs may be selected from the set of values of n, and a to-be-selected encoding matrix corresponding to the value of N may be selected from the set of to-be-selected matrices as the first encoding matrix.
  • a random value may be selected from the set of values of n as the number N of the transmission resources which are capable of currently multiplexed by the K UEs. This random value may be not greater than the number of system-available frequency-domain resources, and the corresponding 2 n ⁇ 1 predetermined data layers may be capable of meeting a load requirement of the K UEs. Then, a to-be-selected encoding matrix corresponding to the value of N may be selected from the set of the to-be-selected encoding matrices as the first encoding matrix.
  • the value of N i.e., the number of the rows of the encoding matrix, may present the number of the transmission resources multiplexed by the UEs.
  • M may have a theoretical maximum value of 2N ⁇ 1, and the number K of the UEs which are capable of multiplexing the N transmission resources may be not greater than the theoretical maximum value.
  • the number of the transmission resources that are capable of being currently multiplexed by the K UEs may be selected according to the practical need, as long as the encoding matrices corresponding to the number of the transmission resources which meets the condition K ⁇ 2 N ⁇ 1 can be used to achieve the pattern mapping for the K UEs.
  • a random value may be selected from the set of values of the number of the transmission resources that meets the condition as the number of the transmission resources multiplexed by the K UEs.
  • Step 110 a acquiring, by the network side, a current data transmission rule, the current data transmission rule including a mapping relationship between the currently-scheduled K UEs and the data layers on the N transmission resources corresponding to the selected encoding matrix, one UE at least occupying one data layer, and K ⁇ 2 N ⁇ 1.
  • the number N of the transmission resources capable of being currently multiplexed by the currently-scheduled K UEs and the first encoding matrix formed in the case that the N transmission resources are multiplexed by the 2 N ⁇ 1 predetermined data layers have been determined at the preprocessing stage.
  • a mapping relation may be created between at least one column of the first encoding matrix and the respective UEs, and then the total number of the columns of the encoding matrix occupied by the K UEs may be determined in accordance with the column corresponding to each UE and the columns occupied by each UE.
  • This total number of the columns of the encoding matrix may be all the columns of the first encoding matrix, i.e., 2 N ⁇ 1 columns, or some of the columns of the first encoding matrix.
  • the encoding matrix (a second encoding matrix) formed in the case that the N transmission resources are multiplexed by the K UEs may be determined in accordance with the column corresponding to each UE and the total number of the columns occupied by the K UEs.
  • This second encoding matrix may be just a sub-matrix of the first encoding matrix, and it may be selected in accordance with the current data transmission rule.
  • a subject that has created the data transmission rule will not be particularly defined.
  • the data transmission rule may be created through negotiation between the network side and the UE, or prescribed in accordance with a protocol.
  • the data transmission rule may be created as follows.
  • the mapping relationship between each UE and at least one column of the first encoding matrix that meets a transmission requirement parameter may be created in accordance with the data transmission parameter of each UE.
  • Each column of the encoding matrix corresponds to one data layer, and a diversity order (i.e., a column weight) is defined as the number of non-zero elements in each column of the encoding matrix and it is used to represent frequency-domain diversity acquired for the data transmission.
  • the transmission requirement parameter at least includes a load of each UE, and any one of the following parameters or any combination of the following combinations: signal-to-noise ratio (SNR), block error rate (BER) and power resource.
  • SNR signal-to-noise ratio
  • BER block error rate
  • the number of columns of the encoding matrix occupied by each UE must meet its load requirement. For example, the UE with a smaller load may occupy fewer columns of the encoding matrix, and the UE with a larger load may occupy more columns of the encoding matrix.
  • the mapping relation may be created between each UE and one column of the encoding matrix that meets the transmission requirement parameter, or between each UE and at least two columns of the encoding matrix that have an identical diversity order and meet the transmission requirement parameter, or between each UE and at least two columns of the encoding matrix that have different diversity orders and meet the transmission requirement parameter.
  • the data layers in the selected columns may have an identical diversity order or different diversity orders.
  • the total number L of columns occupied by the K UEs and the second encoding matrix formed in the case that the N transmission resources are multiplexed by the K UEs may be determined in accordance with the column corresponding to each UE and the number of columns occupied by each UE.
  • the method for mapping the multi-UE data to the encoding matrix in the embodiments of the present disclosure, it is able to map one UE to more than one columns of the encoding matrix, thereby to increase a size of an encoding block for the data transmission and improve the throughput of the entire system.
  • the mapping relationship between the K UEs and the plurality of data layers on the N transmission resources corresponding to the first encoding matrix it is able to map one UE to one or more data layers.
  • a system load may be defined as the total number of data layers occupied by all the UEs on a unit transmission resource (i.e., a transmission resource block).
  • a unit transmission resource i.e., a transmission resource block
  • different UEs may occupy different transmission resources, and the total number of data layers occupied by all the UEs on the unit transmission resource may be 1, i.e., the system load may be 1.
  • the system load may be M/N.
  • the total number of the data layers occupied by all the UEs on the unit transmission resource may be 3/2, i.e., the system load may be 3/2.
  • a transmission load of each UE may be defined as the number of data layers occupied by the UE on a unit transmission resource (i.e., a transmission resource block). For example, in the case that Lk columns are occupied by the UE on the N transmission resources, the load of the UE may be Lk/N.
  • L columns of the first encoding matrix formed in the case that the theoretical maximum number (i.e., 2 N ⁇ 1) of the data layers multiplex the N transmission resources may be selected to form a sub-matrix of the first encoding matrix.
  • a random one of the plurality of sub-matrices may be selected as the second encoding matrix formed in the case that the N transmission resources are multiplexed by the K UEs.
  • L K
  • a multi-UE pattern mapping method for the conventional PDMA technology may be adopted, i.e., one UE may be mapped to one data layer, and the system load may be L/N which is equal to K/N.
  • the system load may be L/N which is greater than K/N.
  • one UE is capable of being mapped to a plurality of data layers, it is able to increase the transmission load of the UE.
  • a small amount of UEs multiplex a frequency-domain resource block of a current system, it is able to increase the throughput of the entire system.
  • an identical time-frequency block multiplexed by the currently-scheduled K UEs has a size of N sc PDMA ⁇ N symb PDMA , where N sc PDMA represents the number of sub-carriers of the time-frequency resource, and N symb PDMA represents the number of OFDM symbols.
  • the number of Resource Elements (REs) of each transmission resource i.e., a size of an admissible encoding block for encoding modulation symbols
  • the size of the encoding block transmitted by each UE mapped onto the plurality of data layers may increase to N sc PDMA ⁇ N symb PDMA ⁇ L k /N on the time-frequency resource with the size of N sc PDMA ⁇ N symb PDMA , so it is able to increase the load of the UE, i.e., the maximum admissible throughput.
  • it is able to reduce a modulation encoding level while ensuring spectral efficiency, thereby to reduce the receiver algorithm complexity.
  • Step 120 a transmitting, by the network side, data to the K UEs in accordance with the current data transmission rule.
  • the present disclosure provides in some embodiments a data reception method which includes: Step 110 b of acquiring, by a network side, a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1; and Step 120 b of receiving, by the network side, data transmitted from the K UEs in accordance with the current data transmission rule.
  • the data reception method is identical to the data transmission method in FIG. 1 a in terms of the inventive concept, and thus will not be particularly defined herein.
  • the present disclosure further provides in some embodiments another data transmission method which includes the following steps.
  • a UE may determine from a network side, the number K of currently-scheduled UEs and the number N of transmission resources multiplexed by the UEs (K ⁇ 2 N ⁇ 1), and select an encoding matrix used when the N transmission resources are multiplexed by 2 N ⁇ 1 predetermined data layers.
  • the encoding matrix may be selected by the network side and then notified to the UE, or directly selected by the UE that has met a configuration requirement.
  • Step S 110 c acquiring, by the UE, a current data transmission rule, the current data transmission rule including a mapping relationship between the currently-scheduled K UEs and the data layers on the N transmission resources corresponding to the selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1.
  • Step 120 c transmitting, by the UE, data to a network side in accordance with the current data transmission rule through the at least one data layer occupied by the UE in the encoding matrix.
  • the data transmission method is identical to the data transmission method in FIG. 1 b in terms of the inventive concept, and thus will not be particularly defined herein.
  • the present disclosure further provides in some embodiments another data reception method which includes the following steps.
  • a UE may determine the number K of currently-scheduled UEs and the number N of transmission resources multiplexed by the UEs (K ⁇ 2 N ⁇ 1) indicated by a network side, and select an encoding matrix used when the N transmission resources are multiplexed by 2 N ⁇ 1 predetermined data layers.
  • the encoding matrix may be selected by the network side and then notified to the UE, or directly selected by the UE that has met a configuration requirement.
  • Step 110 d acquiring, by the UE, a current data transmission rule, the current data transmission rule including a mapping relationship between the currently-scheduled K UEs and data layers on the N transmission resources corresponding to the selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1.
  • Step 120 d receiving, by the UE, feedback data from a network side, the feedback data being fed back by the network side after receiving data transmitted from the UE in accordance with the current data transmission rule.
  • the data reception method is identical to the data transmission method in FIG. 1 a in terms of the inventive concept, and thus will not be particularly defined herein.
  • the network side may transit the data to the corresponding UE in accordance with the mapping relationship contained in the current data transmission rule and on the basis of the data layer occupied by each UE, or instruct the UE to transmit the data to the network side on the data layer occupied by the UE in accordance with the current data transmission rule.
  • the UE may, in the case that the network side has instructed the UE to use the N transmission resources, determine the data layer (one or more columns) occupied thereby in accordance with the predetermined data transmission rule, and transmit the data to the network side on the data layer occupied thereby.
  • the network side may receive the data transmitted from the UE in accordance with the data transmission rule.
  • H PDMA (2,3) , H PDMA (3,7) and H PDMA (4,15) are preconfigured by the system, and values of the number n of the transmission resources may be 2, 3 and 4.
  • an encoding matrix formed in the case that the N transmission resources are multiplexed by the two UEs may be determined.
  • a mapping relationship between the two UEs and the encoding matrix may be created.
  • the values of n that meet the condition K ⁇ 2 n ⁇ 1 may be 2, 3 and 4, so a set of to-be-selected encoding matrices available for the two UEs may be ⁇ H PDMA (2,3) , H PDMA (3,7) , H PDMA (4,15) ⁇ , i.e., all the to-be-selected encoding matrices configured by the system have met the selection condition.
  • n 2 i.e., in the case that the to-be-selected encoding matrix is H PDMA (2,3)
  • two transmission resources may be multiplexed by the two UEs.
  • Two or three columns of H PDMA (2,3) may be selected so as to form the second encoding matrix used when the two transmission resources are multiplexed by the two UEs.
  • the following mapping relationships may be created between the two UEs and the two or three columns of data layers on the two transmission resources corresponding to H PDMA (2,3) .
  • a first column of H PDMA (2,3) may be occupied by a UE 1
  • a second column of H PDMA (2,3) may be occupied by a UE 2 .
  • the first column of H PDMA (2,3) may be occupied by the UE 1
  • the second column and a third column of H PDMA (2,2) may be occupied by the UE 2
  • merely one data layer of H PDMA (2,3) is occupied by the UE 1
  • two data layers of H PDMA (2,3) is occupied by the UE 2
  • a peak throughput of the UE 2 may be twice that of the UE 1 .
  • the UE 1 may have a load of 1/2, the UE 2 may have a load of 2/2, and the system load may be 3/2.
  • the system load may be incremented by 50%.
  • the second column of H PDMA (2,3) may be occupied by the UE 1
  • the third column of H PDMA (2,3) may be occupied by the UE 2 .
  • the data transmission is equivalent to the orthogonal transmission in the related art.
  • the first column of H PDMA (2,3) may be occupied by the UE 1 and the third column of H PDMA (2,3) may be occupied by the UE 2 , or any other mapping modes may also be adopted, which will not be particularly defined herein.
  • mapping the K UEs to the data layers on the plurality of transmission resources corresponding to the encoding matrix, and they may be selected in accordance with the transmission requirement parameter of the UEs. For example, in the case that a load for one UE is 2/2, this UE must be mapped to two data layers (two columns of the encoding matrix).
  • n 3 i.e., in the case that the to-be-selected encoding matrix is H PMDA (3,7)
  • three transmission resources may be multiplexed by the two UEs.
  • Two, three, four, five, six or seven columns that meet the transmission requirement parameter of the two UEs may be selected from H PDMA (3,7) , so as to form the second encoding matrix used when the three transmission resources are multiplexed by the two UEs.
  • the following mapping relationships may be created between the two UEs and the selected data layers on the three transmission resources corresponding to H PDMA (3,7) .
  • second to fourth columns of H PDMA (3,7) may be occupied by the UE 1
  • fifth to seventh columns of H PDMA (3,7) may be occupied by the UE 2
  • the later six columns of H PDMA (3,7) may be selected to from the second encoding matrix used when the three transmission resources are multiplexed by the two UEs.
  • three data layers of H PDMA (3,7) may be occupied by each of the UE 1 and the UE 2 .
  • the UE 1 and the UE 2 may transmit an identical data volume, i.e., they may have an identical peak throughput.
  • the UE 1 may have a load of 3/3
  • the UE 2 may have a load of 3/3
  • the system load may be 6/3.
  • the system load may be incremented by 100%.
  • the UE 1 and the UE 2 may adopt an identical number of, or different numbers of, data layers of H PDMA (3,7) , and there may be various mapping modes, which will not be particularly defined herein.
  • the to-be-selected encoding matrix is H PDMA (4,15)
  • four transmission resources may be multiplexed by the two UEs.
  • Two, three, . . . , fourteen or fifteen columns of H PDMA (4,15) that meet the transmission requirement parameter of the two UEs may be selected, so as to form the second encoding matrix used when the four transmission resources are multiplexed by the two UEs.
  • the following mapping relationships may be created between the two UEs and the data layers on the four transmission resources corresponding to H PDMA (4,15) .
  • third to seventh columns of H PDMA (4,15) may be occupied by the UE 1
  • eighth to fourteenth columns of H PDMA (4,15) may be occupied by the UE 2
  • i.e the third to fourteenth columns of H PDMA (4,15) may be selected to form the second encoding matrix used when the four transmission resources are multiplexed by the two UEs.
  • five data layers of H PDMA (4,15) may be occupied by the UE 1
  • seven data layers of H PDMA (4,15) may be occupied by the UE 2 .
  • the data volume capable of being transmitted by the UE 2 is greater than the data volume capable of being transmitted by the UE 1 .
  • the UE 1 may have a load of 5/4
  • the UE 2 may have a load of 7/4
  • the system load may be 12/4.
  • the system load may be incremented by 200%.
  • the method for allocating the transmission resources for the three UEs will be described hereinafter.
  • an encoding matrix formed in the case that the N transmission resources are multiplexed by the two UEs may be determined.
  • a mapping relationship between the two UEs and the encoding matrix may be created.
  • the values of n that meet the condition K ⁇ 2 n ⁇ 1 may be 2, 3 and 4, so a set of to-be-selected encoding matrices available for the three UEs may be ⁇ H PDMA (2,3) , H PDMA (3,7) , H PDMA (4,15) ⁇ , i.e., all the to-be-selected encoding matrices configured by the system have met the selection condition.
  • n 2
  • the to-be-selected encoding matrix is H PDMA (2,3)
  • two transmission resources may be multiplexed by the three UEs.
  • three columns of H PDMA (2,3) may be selected so as to form the second encoding matrix used when the two transmission resources are multiplexed by the three UEs.
  • a mapping relationships may be created between the three UEs and the three columns of data layers on the two transmission resources corresponding to H PDMA (2,3) .
  • n 3 i.e., in the case that the to-be-selected encoding matrix is H PDMA (3,7)
  • three transmission resources may be multiplexed by the three UEs.
  • Three, four, five, six or seven columns that meet the transmission requirement parameter of the two UEs may be selected from H HPDMA (3,7) so as to form the second encoding matrix used when the three transmission resources are multiplexed by the three UEs.
  • the mapping relationships may be created between the three UEs and the selected data layers on the three transmission resources corresponding to H PDMA (3,7) .
  • a first column of H PDMA (3,7) may be occupied by the UE 1
  • second to fourth columns of H PDMA (3,7) may be occupied by the UE 2
  • fifth to seventh columns of H PDMA (3,7) may be occupied by a UE 3
  • H PDMA (3,7) may be selected as the second encoding matrix used when the three transmission resources are multiplexed by the three UEs.
  • one data layer of H PDMA (3,7) may be occupied by the UE 1
  • three data layers of H PDMA (3,7) may be occupied by each of the UE 2 and the UE 3 .
  • the UE 1 may have a load of 1/3
  • the UE 2 and the UE 3 may each have a load of 3/3
  • the system load may be 7/3.
  • the system load may be incremented by 133.3%.
  • the UE 1 , the UE 2 and the UE 3 may each occupy one or more data layers of H PDMA (3,7) and there may be various mapping modes, which will not be particularly defined herein.
  • the to-be-selected encoding matrix is H PDMA (4,15)
  • four transmission resources may be multiplexed by the three UEs.
  • Three, four, . . . , or fifteen columns of H PDMA (4,15) that meet the transmission requirement parameter of the three UEs may be selected so as to form the second encoding matrix used when the four transmission resources are multiplexed by the three UEs.
  • the mapping relationships between the three UEs and the selected data layers on the four transmission resources corresponding to H PDMA (4,15) may be created, and a method for creating the mapping relationships will not be particularly defined herein.
  • an encoding matrix formed in the case that the N transmission resources are multiplexed by the four UEs may be determined.
  • a mapping relationship between the four UEs and the encoding matrix may be created.
  • the values of n that meet the condition K ⁇ 2 n ⁇ 1 may be 3 and 4, so a set of to-be-selected encoding matrices available for the three UEs and selected from the to-be-selected encoding matrices preconfigured by the system may be ⁇ H PDMA (3,7) , H PDMA (4,15) ⁇ .
  • a corresponding first encoding matrix may be selected, and then columns of the first encoding matrix that meet the selection condition may be selected to from the second encoding matrix. Then, the mapping relationships between the four UEs and the second encoding matrix may be created, and a method for creating the mapping relationships will not be particularly defined herein.
  • the number of the data layers of the first encoding matrix to which the K UEs are mapped may be selected in accordance with a predetermined criterion.
  • the criterion may be set in accordance with the practical experience and then updated and optimized at any time.
  • the number of the data layers occupied by each UE may meet its load requirement, i.e., the UE with a small load may occupy a small amount of data layers, and the UE with a large load may occupy a large number of data layers.
  • the high load of the UE may result in a high SNR.
  • the data transmission may be performed through a transmission layer corresponding to the column with a higher diversity order.
  • the present disclosure further provides in some embodiments a network side device which, as shown in FIG. 7 a , includes: a processing unit 71 a configured to acquire a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1; and a transmission unit 72 a configured to transmit data to the K UEs in accordance with the current data transmission rule.
  • a processing unit 71 a configured to acquire a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1
  • a transmission unit 72 a configured to transmit data to the K UEs in accordance with the current data transmission rule.
  • various pattern-mapping encoding matrices may be selected flexibly.
  • one UE is mapped to one or more data layers of the selected encoding matrix, so as to achieve the mapping relationship between multi-user data and the encoding matrix in a flexible manner.
  • one UE may be mapped to a plurality of data layers, so it is able to increase a transmission load of the UE, thereby to increase a throughput of the entire system. Further, it is able to reduce a modulation encoding level while ensuring the spectral efficiency, thereby to further reduce algorithm complexity of a receiver.
  • the network side device further includes a selection unit 70 a configured to: prior to acquiring the current data transmission rule, determine the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs, K ⁇ 2 N ⁇ 1; and select an encoding matrix used when the N transmission resources are multiplexed by 2 N ⁇ 1 predetermined data layers.
  • the selection unit 70 a is further configured to: select, in accordance with a plurality of values of n corresponding to a plurality of predetermined to-be-selected encoding matrices, a set of values of n which each meets a condition K ⁇ 2 n ⁇ 1; select a set of the to-be-selected encoding matrices available for the K UEs from the plurality of to-be-selected encoding matrices in accordance with the set of values of n; and select the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and select a to-be-
  • the selection unit 70 a is further configured to: select a random value from the set of values of n as the number N of the transmission resources which are capable of being currently multiplexed by the K UEs, the random value being not greater than the number of system-available frequency-domain resources and the corresponding 2 n ⁇ 1 predetermined data layers being capable of meeting a load requirement of the K UEs; and select a to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the
  • each UE is mapped to at least one column of the encoding matrix that meets a corresponding transmission requirement parameter in accordance with the transmission requirement parameter of each UE, and each column of the encoding matrix corresponds to one data layer.
  • the transmission requirement parameter at least includes a load of each UE, and any one of the following parameters or any combination of the following combinations: signal-to-noise ratio (SNR), block error rate (BER) and power resource.
  • SNR signal-to-noise ratio
  • BER block error rate
  • each UE is mapped to one column of the encoding matrix that meets the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have an identical diversity order and meet the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have different diversity orders and meet the transmission requirement parameter.
  • the diversity order is defined as the number of non-zero elements in each column of the encoding matrix and it is used to represent frequency-domain diversity acquired for data transmission.
  • the present disclosure provides in some embodiments another network side device which, as shown in FIG. 7 b , includes: a processing unit 71 b configured to acquire a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1; and a reception unit 72 b configured to receive data transmitted from the K UEs in accordance with the current data transmission rule.
  • a processing unit 71 b configured to acquire a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1
  • a reception unit 72 b configured to receive data transmitted from the K UEs in accordance with the current data transmission rule.
  • various pattern-mapping encoding matrices may be selected flexibly.
  • one UE is mapped to one or more data layers of the selected encoding matrix, so as to achieve the mapping relationship between multi-user data and the encoding matrix in a flexible manner.
  • one UE may be mapped to a plurality of data layers, so it is able to increase a transmission load of the UE, thereby to increase a throughput of the entire system. Further, it is able to reduce a modulation encoding level while ensuring the spectral efficiency, thereby to further reduce algorithm complexity of a receiver.
  • the network side device further includes a selection unit 70 b configured to: prior to acquiring the current data transmission rule, determine the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs, K ⁇ 2 N ⁇ 1; and select an encoding matrix used when the N transmission resources are multiplexed by 2 N ⁇ 1 predetermined data layers.
  • the selection unit 70 b is further configured to: select, in accordance with a plurality of values of n corresponding to a plurality of predetermined to-be-selected encoding matrices, a set of values of n which each meets a condition K ⁇ 2 n ⁇ 1; select a set of the to-be-selected encoding matrices available for the K UEs from the plurality of to-be-selected encoding matrices in accordance with the set of values of n; and select the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and select a to-be-
  • the selection unit 70 b is further configured to: select a random value from the set of values of n as the number N of the transmission resources which are capable of being currently multiplexed by the K UEs, the random value being not greater than the number of system-available frequency-domain resources and the corresponding 2 n ⁇ 1 predetermined data layers being capable of meeting a load requirement of the K UEs; and select a to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the
  • each UE is mapped to at least one column of the encoding matrix that meets a corresponding transmission requirement parameter in accordance with the transmission requirement parameter of each UE, and each column of the encoding matrix corresponds to one data layer.
  • the transmission requirement parameter at least includes a load of each UE, and any one of the following parameters or any combination of the following combinations: signal-to-noise ratio (SNR), block error rate (BER) and power resource.
  • SNR signal-to-noise ratio
  • BER block error rate
  • each UE is mapped to one column of the encoding matrix that meets the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have an identical diversity order and meet the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have different diversity orders and meet the transmission requirement parameter.
  • the diversity order is defined as the number of non-zero elements in each column of the encoding matrix and it is used to represent frequency-domain diversity acquired for data transmission.
  • the network side device may include the transmission unit 72 a and the reception unit 72 b simultaneously.
  • a UE which, as shown in FIG. 7 c , includes: a processing unit 71 c configured to acquire a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1; and a transmission unit 72 c configured to transmit data to a network side in accordance with the current data transmission rule through the at least one data layer occupied by the UE in the encoding matrix.
  • various pattern-mapping encoding matrices may be selected flexibly.
  • one UE is mapped to one or more data layers of the selected encoding matrix, so as to achieve the mapping relationship between multi-user data and the encoding matrix in a flexible manner.
  • one UE may be mapped to a plurality of data layers, so it is able to increase a transmission load of the UE, thereby to increase a throughput of the entire system. Further, it is able to reduce a modulation encoding level while ensuring the spectral efficiency, thereby to further reduce algorithm complexity of a receiver.
  • the UE further includes a selection unit 70 c configured to: prior to acquiring the current data transmission rule, determine the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs indicated by the network side, K ⁇ 2 N ⁇ 1; and select an encoding matrix used when the N transmission resources are multiplexed by 2 N ⁇ 1 predetermined data layers.
  • the selection unit 70 c is further configured to: select, in accordance with a plurality of values of n corresponding to a plurality of predetermined to-be-selected encoding matrices, a set of values of n which each meets a condition K ⁇ 2 n ⁇ 1; select a set of the to-be-selected encoding matrices available for the K UEs from the plurality of to-be-selected encoding matrices in accordance with the set of values of n; and select the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and select a to-be-
  • the selection unit 70 c is further configured to: select a random value from the set of values of n as the number N of the transmission resources which are capable of being currently multiplexed by the K UEs, the random value being not greater than the number of system-available frequency-domain resources and the corresponding 2 n ⁇ 1 predetermined data layers being capable of meeting a load requirement of the K UEs; and select a to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the
  • each UE is mapped to at least one column of the encoding matrix that meets a corresponding transmission requirement parameter in accordance with the transmission requirement parameter of each UE, and each column of the encoding matrix corresponds to one data layer.
  • the transmission requirement parameter at least includes a load of each UE, and any one of the following parameters or any combination of the following combinations: signal-to-noise ratio (SNR), block error rate (BER) and power resource.
  • SNR signal-to-noise ratio
  • BER block error rate
  • each UE is mapped to one column of the encoding matrix that meets the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have an identical diversity order and meet the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have different diversity orders and meet the transmission requirement parameter.
  • the diversity order is defined as the number of non-zero elements in each column of the encoding matrix and it is used to represent frequency-domain diversity acquired for data transmission.
  • the present disclosure further provides in some embodiments another UE which, as shown in FIG. 7 d , includes: a processing unit 71 d configured to acquire a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1; and a reception unit 72 d configured to receive feedback data from a network side, the feedback data being fed back by the network side after receiving data transmitted from the UE in accordance with the current data transmission rule.
  • a processing unit 71 d configured to acquire a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1
  • a reception unit 72 d configured to receive feedback data from a network side, the feedback data being fed back by the
  • various pattern-mapping encoding matrices may be selected flexibly.
  • one UE is mapped to one or more data layers of the selected encoding matrix, so as to achieve the mapping relationship between multi-user data and the encoding matrix in a flexible manner.
  • one UE may be mapped to a plurality of data layers, so it is able to increase a transmission load of the UE, thereby to increase a throughput of the entire system. Further, it is able to reduce a modulation encoding level while ensuring the spectral efficiency, thereby to further reduce algorithm complexity of a receiver.
  • the UE further includes a selection unit 70 d configured to: prior to acquiring the current data transmission rule, determine the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs, K ⁇ 2 N ⁇ 1; and select an encoding matrix used when the N transmission resources are multiplexed by 2 N ⁇ 1 predetermined data layers.
  • the selection unit 70 d is further configured to: select, in accordance with a plurality of values of n corresponding to a plurality of predetermined to-be-selected encoding matrices, a set of values of n which each meets a condition K ⁇ 2 n ⁇ 1; select a set of the to-be-selected encoding matrices available for the K UEs from the plurality of to-be-selected encoding matrices in accordance with the set of values of n; and select the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and select a to-be-
  • the selection unit 70 d is further configured to: select a random value from the set of values of n as the number N of the transmission resources which are capable of being currently multiplexed by the K UEs, the random value being not greater than the number of system-available frequency-domain resources and the corresponding 2 n ⁇ 1 predetermined data layers being capable of meeting a load requirement of the K UEs; and select a to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the
  • each UE is mapped to at least one column of the encoding matrix that meets a corresponding transmission requirement parameter in accordance with the transmission requirement parameter of each UE, and each column of the encoding matrix corresponds to one data layer.
  • the transmission requirement parameter at least includes a load of each UE, and any one of the following parameters or any combination of the following combinations: signal-to-noise ratio (SNR), block error rate (BER) and power resource.
  • SNR signal-to-noise ratio
  • BER block error rate
  • each UE is mapped to one column of the encoding matrix that meets the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have an identical diversity order and meet the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have different diversity orders and meet the transmission requirement parameter.
  • the diversity order is defined as the number of non-zero elements in each column of the encoding matrix and it is used to represent frequency-domain diversity acquired for data transmission.
  • the UE may include both the transmission unit 72 c and the reception unit 72 d.
  • the present disclosure further provides in some embodiments a network side device which, as shown in FIG. 8 a , includes a processor 800 a , a transceiver 810 a and a memory 820 a .
  • the processing unit 800 a is configured to read a program stored in the memory 820 a so as: acquire a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1; and transmit, through the transceiver 810 a , data to the K UEs in accordance with the current data transmission rule.
  • various pattern-mapping encoding matrices may be selected flexibly.
  • one UE is mapped to one or more data layers of the selected encoding matrix, so as to achieve the mapping relationship between multi-user data and the encoding matrix in a flexible manner.
  • one UE may be mapped to a plurality of data layers, so it is able to increase a transmission load of the UE, thereby to increase a throughput of the entire system. Further, it is able to reduce a modulation encoding level while ensuring the spectral efficiency, thereby to further reduce algorithm complexity of a receiver.
  • the processor 800 a prior to acquiring the current data transmission rule, is further configured to determine the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs, K ⁇ 2 N ⁇ 1; and select an encoding matrix used when the N transmission resources are multiplexed by 2 N ⁇ 1 predetermined data layers.
  • the processor 800 a is further configured to: select, in accordance with a plurality of values of n corresponding to a plurality of predetermined to-be-selected encoding matrices, a set of values of n which each meets a condition K ⁇ 2 n ⁇ 1; select a set of the to-be-selected encoding matrices available for the K UEs from the plurality of to-be-selected encoding matrices in accordance with the set of values of n; and select the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and select a to-be-s
  • the processor 800 a is further configured to: select a random value from the set of values of n as the number N of the transmission resources which are capable of being currently multiplexed by the K UEs, the random value being not greater than the number of system-available frequency-domain resources and the corresponding 2 n ⁇ 1 predetermined data layers being capable of meeting a load requirement of the K UEs; and select a to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the N
  • each UE is mapped to at least one column of the encoding matrix that meets a corresponding transmission requirement parameter in accordance with the transmission requirement parameter of each UE, and each column of the encoding matrix corresponds to one data layer.
  • the transmission requirement parameter at least includes a load of each UE, and any one of the following parameters or any combination of the following combinations: signal-to-noise ratio (SNR), block error rate (BER) and power resource.
  • SNR signal-to-noise ratio
  • BER block error rate
  • each UE is mapped to one column of the encoding matrix that meets the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have an identical diversity order and meet the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have different diversity orders and meet the transmission requirement parameter.
  • the diversity order is defined as the number of non-zero elements in each column of the encoding matrix and it is used to represent frequency-domain diversity acquired for data transmission.
  • bus architecture may include a number of buses and bridges connected to each other, so as to connect various circuits for one or more processors 800 a and one or more memories 820 a .
  • the bus architecture may be used to connect any other circuits, such as a circuit for a peripheral device, a circuit for a voltage stabilizer and a power management circuit.
  • Bus interfaces are provided, and the transceiver 810 a may consist of a plurality of elements, i.e., a transmitter and a receiver for communication with any other devices over a transmission medium.
  • the processor 800 a may take charge of managing the bus architecture as well as general processing.
  • the memory 820 a may store data desired for the operation of the processor 800 a.
  • the present disclosure provides in some embodiments a network side device which, as shown in FIG. 8 b , includes a processor 800 b , a transceiver 810 b and a memory 820 b .
  • the processor 800 b is configured to read a program stored in the memory 820 b , so as to: acquire a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1; and receive, through the transceiver 810 b , data transmitted from the K UEs in accordance with the current data transmission rule.
  • various pattern-mapping encoding matrices may be selected flexibly.
  • one UE is mapped to one or more data layers of the selected encoding matrix, so as to achieve the mapping relationship between multi-user data and the encoding matrix in a flexible manner.
  • one UE may be mapped to a plurality of data layers, so it is able to increase a transmission load of the UE, thereby to increase a throughput of the entire system. Further, it is able to reduce a modulation encoding level while ensuring the spectral efficiency, thereby to further reduce algorithm complexity of a receiver.
  • the processor 800 b prior to acquiring the current data transmission rule, is further configured to: determine the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs, K ⁇ 2 N ⁇ 1; and select an encoding matrix used when the N transmission resources are multiplexed by 2 N ⁇ 1 predetermined data layers.
  • the processor 800 b is further configured to: select, in accordance with a plurality of values of n corresponding to a plurality of predetermined to-be-selected encoding matrices, a set of values of n which each meets a condition K ⁇ 2 n ⁇ 1; select a set of the to-be-selected encoding matrices available for the K UEs from the plurality of to-be-selected encoding matrices in accordance with the set of values of n; and select the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and select a to-be-s
  • the processor 800 b is further configured to: select a random value from the set of values of n as the number N of the transmission resources which are capable of being currently multiplexed by the K UEs, the random value being not greater than the number of system-available frequency-domain resources and the corresponding 2 n ⁇ 1 predetermined data layers being capable of meeting a load requirement of the K UEs; and select a to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the N
  • each UE is mapped to at least one column of the encoding matrix that meets a corresponding transmission requirement parameter in accordance with the transmission requirement parameter of each UE, and each column of the encoding matrix corresponds to one data layer.
  • the transmission requirement parameter at least includes a load of each UE, and any one of the following parameters or any combination of the following combinations: signal-to-noise ratio (SNR), block error rate (BER) and power resource.
  • SNR signal-to-noise ratio
  • BER block error rate
  • each UE is mapped to one column of the encoding matrix that meets the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have an identical diversity order and meet the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have different diversity orders and meet the transmission requirement parameter.
  • the diversity order is defined as the number of non-zero elements in each column of the encoding matrix and it is used to represent frequency-domain diversity acquired for data transmission.
  • bus architecture may include a number of buses and bridges connected to each other, so as to connect various circuits for one or more processors 800 b and one or more memories 820 b .
  • the bus architecture may be used to connect any other circuits, such as a circuit for a peripheral device, a circuit for a voltage stabilizer and a power management circuit.
  • Bus interfaces are provided, and the transceiver 810 b may consist of a plurality of elements, i.e., a transmitter and a receiver for communication with any other devices over a transmission medium.
  • the processor 800 b may take charge of managing the bus architecture as well as general processing.
  • the memory 820 b may store data desired for the operation of the processor 800 b.
  • the present disclosure further provides in some embodiments a UE which, as shown in FIG. 8 c , includes a processor 800 c , a transceiver 810 c and a memory 820 c .
  • the processor 800 c is configured to read a program stored in the memory 820 c , so as to: acquire a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1; and transmit, through the transceiver 810 c , data to a network side in accordance with the current data transmission rule through the at least one data layer occupied by the UE in the encoding matrix.
  • various pattern-mapping encoding matrices may be selected flexibly.
  • one UE is mapped to one or more data layers of the selected encoding matrix, so as to achieve the mapping relationship between multi-user data and the encoding matrix in a flexible manner.
  • one UE may be mapped to a plurality of data layers, so it is able to increase a transmission load of the UE, thereby to increase a throughput of the entire system. Further, it is able to reduce a modulation encoding level while ensuring the spectral efficiency, thereby to further reduce algorithm complexity of a receiver.
  • the processor 800 c prior to acquiring the current data transmission rule, is further configured to: determine the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs indicated by the network side, K ⁇ 2 N ⁇ 1; and select an encoding matrix used when the N transmission resources are multiplexed by 2 N ⁇ 1 predetermined data layers.
  • the processor 800 c is further configured to: select, in accordance with a plurality of values of n corresponding to a plurality of predetermined to-be-selected encoding matrices, a set of values of n which each meets a condition K ⁇ 2 n ⁇ 1; select a set of the to-be-selected encoding matrices available for the K UEs from the plurality of to-be-selected encoding matrices in accordance with the set of values of n; and select the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and select a to-be-s
  • the processor 800 c is further configured to: select a random value from the set of values of n as the number N of the transmission resources which are capable of being currently multiplexed by the K UEs, the random value being not greater than the number of system-available frequency-domain resources and the corresponding 2 n ⁇ 1 predetermined data layers being capable of meeting a load requirement of the K UEs; and select a to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the N
  • each UE is mapped to at least one column of the encoding matrix that meets a corresponding transmission requirement parameter in accordance with the transmission requirement parameter of each UE, and each column of the encoding matrix corresponds to one data layer.
  • the transmission requirement parameter at least includes a load of each UE, and any one of the following parameters or any combination of the following combinations: signal-to-noise ratio (SNR), block error rate (BER) and power resource.
  • SNR signal-to-noise ratio
  • BER block error rate
  • each UE is mapped to one column of the encoding matrix that meets the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have an identical diversity order and meet the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have different diversity orders and meet the transmission requirement parameter.
  • the diversity order is defined as the number of non-zero elements in each column of the encoding matrix and it is used to represent frequency-domain diversity acquired for data transmission.
  • bus architecture may include a number of buses and bridges connected to each other, so as to connect various circuits for one or more processors 800 c and one or more memories 820 c .
  • the bus architecture may be used to connect any other circuits, such as a circuit for a peripheral device, a circuit for a voltage stabilizer and a power management circuit.
  • Bus interfaces are provided, and the transceiver 810 c may consist of a plurality of elements, i.e., a transmitter and a receiver for communication with any other devices over a transmission medium.
  • a user interface 830 c may also be provided for devices which are to be arranged inside or outside the UE, and these devices may include but not limited to a keypad, a display, a speaker, a microphone and a joystick.
  • the processor 800 c may take charge of managing the bus architecture as well as general processing.
  • the memory 820 c may store therein data for the operation of the processor 800 c.
  • the present disclosure provides in some embodiments a UE which, as shown in FIG. 8 d , includes a processor 800 d , a transceiver 810 d and a memory 820 d .
  • the processor 800 d is configured to read a program stored in the memory 820 d , so as to: acquire a current data transmission rule, the current data transmission rule including a mapping relationship between currently-scheduled K UEs and data layers on N transmission resources corresponding to a selected encoding matrix, one UE at least occupying one data layer, K ⁇ 2 N ⁇ 1; and receive, through the transceiver 810 d , feedback data from a network side, the feedback data being fed back by the network side after receiving data transmitted from the UE in accordance with the current data transmission rule.
  • various pattern-mapping encoding matrices may be selected flexibly.
  • one UE is mapped to one or more data layers of the selected encoding matrix, so as to achieve the mapping relationship between multi-user data and the encoding matrix in a flexible manner.
  • one UE may be mapped to a plurality of data layers, so it is able to increase a transmission load of the UE, thereby to increase a throughput of the entire system. Further, it is able to reduce a modulation encoding level while ensuring the spectral efficiency, thereby to further reduce algorithm complexity of a receiver.
  • the processor 800 d prior to acquiring the current data transmission rule, is further configured to: determine the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs, K ⁇ 2 N ⁇ 1; and select an encoding matrix used when the N transmission resources are multiplexed by 2 N ⁇ 1 predetermined data layers.
  • the processor 800 d is further configured to: select, in accordance with a plurality of values of n corresponding to a plurality of predetermined to-be-selected encoding matrices, a set of values of n which each meets a condition K ⁇ 2 n ⁇ 1; select a set of the to-be-selected encoding matrices available for the K UEs from the plurality of to-be-selected encoding matrices in accordance with the set of values of n; and select the number N of the transmission resources which are capable of being currently multiplexed by the K UEs from the set of values of n, and select a to-be-s
  • the processor 800 d is further configured to: select a random value from the set of values of n as the number N of the transmission resources which are capable of being currently multiplexed by the K UEs, the random value being not greater than the number of system-available frequency-domain resources and the corresponding 2 n ⁇ 1 predetermined data layers being capable of meeting a load requirement of the K UEs; and select a to-be-selected encoding matrix corresponding to the value of N from the set of the to-be-selected encoding matrices as the encoding matrix used when the N
  • each UE is mapped to at least one column of the encoding matrix that meets a corresponding transmission requirement parameter in accordance with the transmission requirement parameter of each UE, and each column of the encoding matrix corresponds to one data layer.
  • the transmission requirement parameter at least includes a load of each UE, and any one of the following parameters or any combination of the following combinations: signal-to-noise ratio (SNR), block error rate (BER) and power resource.
  • SNR signal-to-noise ratio
  • BER block error rate
  • each UE is mapped to one column of the encoding matrix that meets the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have an identical diversity order and meet the transmission requirement parameter, or mapped to at least two columns of the encoding matrix that have different diversity orders and meet the transmission requirement parameter.
  • the diversity order is defined as the number of non-zero elements in each column of the encoding matrix and it is used to represent frequency-domain diversity acquired for data transmission.
  • bus architecture may include a number of buses and bridges connected to each other, so as to connect various circuits for one or more processors 800 d and one or more memories 820 d .
  • the bus architecture may be used to connect any other circuits, such as a circuit for a peripheral device, a circuit for a voltage stabilizer and a power management circuit.
  • Bus interfaces are provided, and the transceiver 810 d may consist of a plurality of elements, i.e., a transmitter and a receiver for communication with any other devices over a transmission medium.
  • a user interface 830 d may also be provided for devices which are to be arranged inside or outside the UE, and these devices may include but not limited to a keypad, a display, a speaker, a microphone and a joystick.
  • the processor 800 d may take charge of managing the bus architecture as well as general processing.
  • the memory 820 d may store therein data for the operation of the processor 800 d.
  • the network side may determine the number K of the currently-scheduled UEs and the number N of the transmission resources multiplexed by the UEs (where N is greater than or equal to log 2 (K+1), i.e., K ⁇ 2 N ⁇ 1), and determine the encoding matrix used when the N transmission resources are multiplexed by the 2 N ⁇ 1 predetermined data layers.
  • the network side may then acquire the current data transmission rule.
  • the current data transmission rule may include the mapping relationship between the currently-scheduled K UEs and data layers on N transmission resources, i.e., at least log 2 (K+1) transmission resources, corresponding to a selected encoding matrix, and one UE may at least occupy one data layer.
  • the network side may then transmit the data to the K UEs in accordance with the data transmission rule, and/or receive the data transmitted from the K UEs in accordance with the current data transmission rule.
  • various pattern-mapping encoding matrices may be selected flexibly.
  • one UE is mapped to one or more data layers of the selected encoding matrix, so as to achieve the mapping relationship between multi-user data and the encoding matrix in a flexible manner.
  • one UE may be mapped to a plurality of data layers, so it is able to increase a transmission load of the UE, thereby to increase a throughput of the entire system. Further, it is able to reduce a modulation encoding level while ensuring the spectral efficiency, thereby to further reduce algorithm complexity of a receiver.
  • the present disclosure may be provided as a method, a system or a computer program product, so the present disclosure may be in the form of full hardware embodiments, full software embodiments, or combinations thereof.
  • the present disclosure may be in the form of a computer program product implemented on one or more computer-readable storage mediums (including but not limited to disk memory, Compact Disc-Read Only Memory (CD-ROM) and optical memory) including computer-readable program codes.
  • CD-ROM Compact Disc-Read Only Memory
  • optical memory including computer-readable program codes.
  • These computer program instructions may also be stored in a computer readable storage that may guide the computer or the other programmable data process devices to function in a certain way, so that the instructions stored in the computer readable storage may create a product including an instruction unit which achieves the functions assigned in one or more flows in the flow chart and/or one or more blocks in the block diagram.
  • These computer program instructions may also be loaded in the computer or the other programmable data process devices, so that a series of operation steps are executed on the computer or the other programmable devices to create processes achieved by the computer. Therefore, the instructions executed in the computer or the other programmable devices provide the steps for achieving the function assigned in one or more flows in the flow chart and/or one or more blocks in the block diagram.

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US20180131433A1 (en) 2018-05-10
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